Dyfyniad APA

BILLINGTON, D. P. (1982). Thin shell concrete structures.-- Ed.2. McGraw-Hill Book.

Dyfyniad Arddull Chicago

BILLINGTON, David P. Thin Shell Concrete Structures.-- Ed.2. New York: McGraw-Hill Book, 1982.

Dyfyniad MLA

BILLINGTON, David P. Thin Shell Concrete Structures.-- Ed.2. McGraw-Hill Book, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.